高二英語教案：《Unit 9 Saving the earth》教學設計（二）(2)

　　Step 2 Presentation

　　1. Hold a brief discussion.

　　Now I have a few questions for your discussion:

　　What kinds of pollution have you observed around you?

　　What caused the pollution?

　　Have you noted any other causes of damage?

　　[Divide the class into the groups of four. Get them to discuss the questions with each other. Ss are to report their ideas. ]

　　2. What does the map tell?

　　Read the map together with the class. Make sure they get the right locations of the countries and places mentioned in the text. They are also going to know that the world map shows the polluted areas, which locate in almost every part of the world. Therefore, the demands for saving the earth are urgently called.

　　Step 3 Fast reading

　　Now read the three passages. Find the places on the map of the world where the damage has happened. [Allow the Students enough time to do this task and check their answers in pairs.]

　　Step 4 Careful reading

　　Read the three passages again to answer the questions Part. 1. [Ss to find out the answers. The teacher can help them understand the meaning of some difficult sentences and deal with any other language items. ]

　　Step 5 Note making

　　[Explain to the students: ]

　　What is note making? What are the differences between notes and complete sentences? [Notes often do not have a main verb, and other small words may be left out. Do the first one as an example: Earth: not enough rain, too many cattle]

　　Please go over the passages again and write your note first. [Ss to come to the front and write down their notes on the Bb.]

　　Some suggested notes:

　　Earth: not enough rain, too many cattle, cutting down trees, strong winds

　　Air: smoke from factories, power stations, cars, chemical rain, accidents at nuclear power stations and factories.

　　Water: waste from factories and cities.